Fluorescent Light Bulb Base Types

Look at your fixture to determine its base type.

Fluorescent light bulb base types.

Since their introduction as a commercial product in 1939 many different types of fluorescent lamp have been introduced. T12s are 1 5 inch diameter fluorescent tubes. The difference is in the diameter. Certain longer fluorescent led tubes will be assessed a shipping surcharge.

Linear fluorescent tubes are the most common type of fluorescent lamps. Medium standard base code. There are tens of unique bases for light bulbs. The common terms are medium intermediate candelabra and mogul.

This type of fluorescent tube lighting is the most popular because of its high cri and many color temperature options. There are three common sizes shown in the chart the below. The most familiar is the edison screw base found on most incandescent bulbs and many halogen compact fluorescent hid and now ledbulbs. For shipments to canada you can add some items to your cart to determine the shipping rate.

Look at your fixture to determine its base type. Pin type bases are normally used for track lighting landscape bulbs. The most commonly available is the t8 bulbs. Screw bases 10mm miniature screw e10 11mm miniature candelabra e11 12mm candelabra e12 14mm european e14 17mm intermediate e17 26mm medium e26 27mm european medium e27 39mm mogul e39 fluorescent pin bases miniature bipin medium bipin single pin recessed double contact 4 pin single ended 4 pin 2gx 13 axial twist lock bases 10mm gu10 10mm gx10 24mm gu24.

Candelabra base code. All fluorescent lamps use the same technology but there are several different variations and sizes. Most common light bulb uses including lamps recessed flush mount flood lights are going to have one of the first three base types shown above. For alaska hawaii the base rate is 27 59 and surcharges may apply for larger orders.

Also what is the shape of your bulb. Connects to miniature g5 base. Frequently fluorescent bulbs will have either a single pin or bi pin two pin base type. Pin type bases base codes gu5 3 gu10 and gu24.

Systematic nomenclature identifies mass market lamps as to overall shape power rating length color and other electrical and illuminating characteristics. T8 fluorescent bulb 32 watt pin spacing 13mm sold in a wide range of color temperature and light output in lumens straight or u shaped. Some will have a recessed double contact. Intermediate base code.

Connects to a medium bi pin g13 base. This is to cover all of the additional shipping materials that are needed to ensure a safe.